I-405 Express Toll Lanes - Who Can Use the Lanes for Free

The I-405 express toll lanes give you the option to pay a toll for a faster, more reliable trip Monday through Friday from 5 a.m. to 7 p.m. Carpools with enough people can use the lanes toll-free with a Flex Pass.

The lanes are free to most vehicles on weekends, certain holidays and overnight from 7 p.m. to 5 a.m.

Carpools
If your carpool has enough passengers, you can set a Flex Pass to HOV mode to use the express toll lanes for free. The carpool occupancy requirement depends on the time of day.

Single occupancy and non-carpool vehicles
Vehicles that do not have the required number of occupants to travel toll-free still have the option to use the express toll lanes by paying a toll. Learn more about how toll rates work.

Weight Restrictions
I-405 express toll lanes have the same weight restrictions as other HOV lanes in Washington. Vehicles over 10,000 pounds, including tow trucks and trailers, are not allowed into the express toll lanes at any time, including nights or weekends.

The weight restriction does not apply to emergency vehicles, recreational vehicles, or buses.